From: Growth, structural and optical properties of Pb1-xFeₓTe epitaxial films

Figure 2. SEM images of the surface of Pb1–xFexTe epitaxial films (х=0.05) grown on BaF2 substrates, Тsub=573¸623 K; TTe=410 K, a) without Te compensation, b) after Te compensation

a)                                               b)